article Joshua Riibe arrives at a Dominican Republic courthouse alongside his father, Albert Riibe, on Tuesday, March 18, 2025. Riibe is a key witness in the disappearance of Sudiksha Konanki, an American college student who went missing while swimming on a Riibe appeared in court in the Dominican Republic, where he has been held in the disappearance of Konanki, 20, who has been missing since the early morning hours of March 6.